Have fun shopping, Marty. :)
Jbc is right that the Bottlerockets are very worth a listen (I like "Brand New Year"). For my money, the best St. Louis Bands are no longer active: Uncle Tupelo, arguably among the most important American rock bands of the past 50 years (sort of the Velvet Underground of alt.country) and Nadine, whose "Downtown Saturday," is a classic of Americana. Both bands will likely appeal to fans of DBT type stuff.
Women working more and less in the genre worth checking out: the great Shannon McNally ("Geronimo," "Coldwater") and Sera Cahoone (selftitled, "Only as the Day is Long")
John